Puppy Growth Chart by Age & Size
Learn how puppies grow from early puppyhood toward adult size, why small and large dogs mature at different rates, and how to track growth without relying on one number.
What Is a Puppy Growth Chart?
A puppy growth chart is a reference for understanding how a puppy’s size and weight can change over time. Unlike a simple puppy weight chart, a growth chart is about the pattern of development: how quickly weight changes, when growth begins to slow, and how the timeline differs between expected adult-size groups.
There is no universal growth curve that fits every puppy. Breed, genetics, parent size, nutrition, health and individual development all influence the pattern.
Want to estimate your puppy’s adult weight?
Use your puppy’s current age and measured weight to get an estimated adult weight and a likely range.
Use the Puppy Weight Calculator →Puppy Growth Chart by Age
The table below gives a broad illustration of how much of the growth journey a puppy may have completed at different ages. It is intentionally presented as a reference rather than a precise prediction for every breed.
| Age | Typical growth stage | What to expect |
|---|---|---|
| 8 weeks | Early puppyhood | Rapid growth; adult-size differences are already substantial. |
| 10–12 weeks | Rapid growth | Weight can change quickly, especially in larger puppies. |
| 14–16 weeks | Active growth | Growth remains significant; size category becomes increasingly useful. |
| 18–20 weeks | Active growth | Many puppies are still gaining size quickly, with large breeds having more growth ahead. |
| 6 months | Mid-growth period | Some small dogs are approaching maturity while larger dogs may have substantial growth remaining. |
| 9 months | Later growth | Growth rate often begins slowing, but timing varies by breed and size. |
| 12 months | Near or around maturity for many dogs | Small dogs may be close to adult size; large and giant dogs can continue developing. |
| 18–24 months | Extended maturity | Some large and giant dogs may continue physical development into this period. |
Puppy Growth Stages
1. Early puppy growth
During the first weeks after weaning, puppies can gain weight rapidly. Their expected adult size makes a major difference, so comparing a small-breed puppy directly with a giant-breed puppy is misleading.
2. Rapid juvenile growth
Through the early months, puppies generally continue gaining weight and changing body proportions. Regular measurements are useful because growth is a process rather than a single event.
3. Slowing growth
As puppies approach adult size, the rate of weight gain usually becomes less dramatic. Small dogs tend to reach this point sooner than large dogs.
4. Physical maturity
Reaching a stable body weight does not necessarily mean every aspect of physical development has finished. Larger dogs may continue developing for considerably longer than small dogs.
How Puppy Growth Differs by Size
Toy Puppies
Usually reach adult size earlier and have a shorter overall growth period.
Small Puppies
Often approach adult size around the first year, although individual breeds vary.
Medium Puppies
Typically have a longer growth period than toy and small dogs.
Large Puppies
Can continue gaining size well beyond the point when smaller dogs are nearly mature.
Giant Puppies
Often have the longest growth timeline and can continue physical development into the second year.
Puppy Weight vs. Puppy Growth
A puppy weight chart answers a reference question such as “How much might a puppy weigh at this age?” A growth chart answers a broader question: “How is my puppy progressing toward adult size?”
If you know your puppy’s current weight and age and want a personalized estimate, the puppy weight calculator is the appropriate tool.
How to Track Your Puppy’s Growth
- Weigh consistently. Use the same scale where practical.
- Record the age. Weeks are especially useful during early puppyhood.
- Keep a history. Several measurements reveal a trend better than a single reading.
- Record relevant context. Breed, sex, expected adult size and parent size can help interpret the trend.
- Watch the whole puppy. Appetite, energy, body condition and general health matter alongside weight.
What Can Change a Puppy’s Growth Pattern?
Genetics and breed
Inherited traits have a major effect on adult size and growth timing. This is why breed-specific resources can be more useful than a generic chart for a purebred puppy.
Parent size
Knowing the adult size of the parents can provide additional context, particularly when estimating a mixed-breed puppy’s likely range.
Nutrition
Appropriate nutrition supports normal development. Rapid changes in diet or inappropriate feeding should be discussed with a veterinary professional when there are concerns about growth.
Health
Illness and other health problems can affect appetite, weight gain and development. A calculator or chart cannot determine the cause of abnormal growth.
How Big Will My Puppy Get?
Adult-size prediction is more useful when multiple clues are considered together: current age, current weight, breed, parent size and the puppy’s growth history.
For a practical estimate, use the How Big Will My Puppy Get? guide alongside the calculator. The goal is a reasonable range, not false precision.
When Do Puppies Stop Growing?
Small and toy dogs generally reach adult size sooner than large and giant dogs. Some larger dogs can continue gaining size and developing well beyond their first birthday.
For a dedicated answer to the maturity question, visit When Do Puppies Stop Growing?.
Frequently Asked Questions
Explore the Puppy Weight & Growth Silo
Puppy Weight Predictor Home
Main hub for puppy weight and growth resources.
Puppy Weight Calculator
Calculate an estimated adult weight from age and current weight.
Puppy Weight Chart
Compare broad puppy weight ranges by age and expected size.
Puppy Weight by Age
Explore age-focused weight questions and growth references.
How Big Will My Puppy Get?
Understand adult-size prediction factors.
When Do Puppies Stop Growing?
Learn how maturity timing differs by size.